What is the max SPL for this cabinet? After going through a thousand options, I'm reconsidering purchasing this cab again. I'll mostly be depending on the PA for support in the house, so the predominant function of my cab (hopefully) will be to provide my own stage volume. Will this cab punch through and be heard over two loud guitarists? I'll be pairing it with a Peavey 450 Max, figuring a 4-ohm cab at 300 watts. Also, in the event that I'm ever in a situation where PA support would not be available, would this Peavey/Avatar setup carry a medium-sized room? I know it won't win any awards for boutique cred, but would it be functional and efficient?